What is the greatest common multiple of 42 and 55?

Answer 1

The GCF of 49 and 55 is 1.

The prime factorization of 49 is 7*7.
The prime factorization of 55 is 5*11
They have no common factors other than 1, so they are coprime and their GCF is 1.

Answer 2

There is no answer to the question.

For, if X was the greatest common multiple, then 2X would also be a common multiple and would clearly be greater. And then, if 2X were the greatest common multiple, 4X would be a common multiple and greater still. And so on ...

Answer 3

42 = 2 x 3 x 7; 55 = 5 x 11; Greatest common factor is 1

Answer 4

The greatest common multiple of any set of integers is infinite.

Answer 5

The GCF is 11.

Answer 6

The GCF is 1.

Answer 7

The GCF of 55 and 77 is 11.

Answer 8

1

Answer 9

1